package org.example.config;

import lombok.RequiredArgsConstructor;
import org.example.filter.JwtAuthenticationTokenFilter;
import org.example.handler.security.AccessDeniedHandlerImpl;
import org.example.handler.security.AuthenticationEntryPointImpl;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.authentication.AuthenticationManager;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.config.http.SessionCreationPolicy;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;

@Configuration
@RequiredArgsConstructor
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class SecurityConfig extends  WebSecurityConfigurerAdapter {


    @Override
    @Bean
    public AuthenticationManager authenticationManagerBean() throws Exception {
        return super.authenticationManagerBean();
    }

    @Bean
    //把官方的PasswordEncoder密码加密方式替换成BCryptPasswordEncoder
    public PasswordEncoder passwordEncoder(){

        return new BCryptPasswordEncoder();
    }

    private final JwtAuthenticationTokenFilter jwtAuthenticationTokenFilter;

    private final AccessDeniedHandlerImpl accessDeniedHandler;

    private final AuthenticationEntryPointImpl authenticationEntryPoint;

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
                //关闭csrf
                .csrf().disable()

                //不通过Session获取SecurityContext
                .sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS)
                .and()
                .authorizeRequests()
                // 对于登录接口 允许匿名访问
                .antMatchers("/login").permitAll()
                .antMatchers("/logout").authenticated()
                .antMatchers("/tag/list").authenticated()
                .antMatchers("/getRouters").authenticated()
                .antMatchers("/getInfo").authenticated()

                // 除上面外的所有请求全部不需要认证即可访问
                .anyRequest().permitAll();

        http.exceptionHandling()
                .authenticationEntryPoint(authenticationEntryPoint)
                .accessDeniedHandler(accessDeniedHandler);

        http.logout().disable();

        http.addFilterBefore(jwtAuthenticationTokenFilter, UsernamePasswordAuthenticationFilter.class);

        //允许跨域
        http.cors();
    }
}
